Research Article

Fixed Points of Multivalued Mappings on $S$-Metric Spaces

Number: 52 September 30, 2025

Fixed Points of Multivalued Mappings on $S$-Metric Spaces

Abstract

In the present study, an extension of Bollenbacher and Hicks's fixed point theorem, which is a version of Caristi's fixed point theorem, is proved for the context of multivalued mappings in $S$-metric spaces. Several significant results are derived from this extension. Moreover, it has been shown that various fixed point theorems for single-valued mappings can be derived as special cases from the main theorem.

Keywords

References

  1. J. Caristi, Fixed point theorems for mappings satisfying inwardness conditions, Transactions of the American Mathematical Society 215 (1976) 241--251.
  2. I. Ekeland, On the variational principle, Journal of Mathematical Analysis and Applications 47 (2) (1974) 324--353.
  3. D. Downing, W. A. Kirk, A generalization of Caristi's theorem with applications to nonlinear mapping theory, Pacific Journal of Mathematics 69 (2) (1977) 339--346.
  4. J. R. Jachymski, Caristi's fixed point theorem and selections of set-valued contractions, Journal of Mathematical Analysis and Applications 227 (1998) 55--67.
  5. M. A. Khamsi, Remarks on Caristi's fixed point theorem, Nonlinear Analysis: Theory, Methods and Applications 71 (1-2) (2009) 227--231.
  6. W.-S. Du, On Caristi-type mappings without lower semicontinuity assumptions, Journal of Fixed Point Theory Applications 17 (2015) 733--752.
  7. S. Cobzaş, Fixed points and completeness in metric and generalized metric spaces, Journal of Mathematical Sciences 250 (2020) 475--535.
  8. W. Kozlowski, A purely metric proof of the Caristi fixed point theorem, Bulletin of the Australian Mathematical Society 95 (2017) 333--337.

Details

Primary Language

English

Subjects

Operator Algebras and Functional Analysis

Journal Section

Research Article

Early Pub Date

September 30, 2025

Publication Date

September 30, 2025

Submission Date

July 18, 2025

Acceptance Date

September 7, 2025

Published in Issue

Year 2025 Number: 52

APA
Karayılan, H. (2025). Fixed Points of Multivalued Mappings on $S$-Metric Spaces. Journal of New Theory, 52, 52-60. https://doi.org/10.53570/jnt.1745667
AMA
1.Karayılan H. Fixed Points of Multivalued Mappings on $S$-Metric Spaces. JNT. 2025;(52):52-60. doi:10.53570/jnt.1745667
Chicago
Karayılan, Hakan. 2025. “Fixed Points of Multivalued Mappings on $S$-Metric Spaces”. Journal of New Theory, nos. 52: 52-60. https://doi.org/10.53570/jnt.1745667.
EndNote
Karayılan H (September 1, 2025) Fixed Points of Multivalued Mappings on $S$-Metric Spaces. Journal of New Theory 52 52–60.
IEEE
[1]H. Karayılan, “Fixed Points of Multivalued Mappings on $S$-Metric Spaces”, JNT, no. 52, pp. 52–60, Sept. 2025, doi: 10.53570/jnt.1745667.
ISNAD
Karayılan, Hakan. “Fixed Points of Multivalued Mappings on $S$-Metric Spaces”. Journal of New Theory. 52 (September 1, 2025): 52-60. https://doi.org/10.53570/jnt.1745667.
JAMA
1.Karayılan H. Fixed Points of Multivalued Mappings on $S$-Metric Spaces. JNT. 2025;:52–60.
MLA
Karayılan, Hakan. “Fixed Points of Multivalued Mappings on $S$-Metric Spaces”. Journal of New Theory, no. 52, Sept. 2025, pp. 52-60, doi:10.53570/jnt.1745667.
Vancouver
1.Hakan Karayılan. Fixed Points of Multivalued Mappings on $S$-Metric Spaces. JNT. 2025 Sep. 1;(52):52-60. doi:10.53570/jnt.1745667

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